createNullableDoubleProperty method Null safety
Short hand helper function for initializing an EmpireNullableDoubleProperty.
See EmpireProperty for propertyName
usages.
Example
late final EmpireNullableDoubleProperty percentage;
percentage = createNullableDoubleProperty();
Implementation
EmpireNullableDoubleProperty createNullableDoubleProperty(
{double? value, String? propertyName}) {
return EmpireNullableDoubleProperty(value, this,
propertyName: propertyName);
}